What is the Greatest Common Factor of 20705 and 20711?

Greatest common factor (GCF) of 20705 and 20711 is 1.

GCF(20705,20711) = 1

We will now calculate the prime factors of 20705 and 20711, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20705 and 20711.

How to find the GCF of 20705 and 20711?

We will first find the prime factorization of 20705 and 20711. After we will calculate the factors of 20705 and 20711 and find the biggest common factor number .

Step-1: Prime Factorization of 20705

Prime factors of 20705 are 5, 41, 101. Prime factorization of 20705 in exponential form is:

20705 = 5¹ × 41¹ × 101¹

Step-2: Prime Factorization of 20711

Prime factors of 20711 are 139, 149. Prime factorization of 20711 in exponential form is:

20711 = 139¹ × 149¹

Step-3: Factors of 20705

List of positive integer factors of 20705 that divides 20705 without a remainder.

1, 5, 41, 101, 205, 505, 4141

Step-4: Factors of 20711

List of positive integer factors of 20711 that divides 20705 without a remainder.

1, 139, 149

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20705 and 20711. The biggest common factor number is the GCF number.
So the greatest common factor 20705 and 20711 is 1.

Also check out the Least Common Multiple of 20705 and 20711